Cactus announced that Pentax support was added to the Cactus V6 II TTL wireless flash trigger: Cactus X-TTL firmware for Pentax is available now! Download the FREE firmware upgrade on the V6 II to have wireless P-TTL, cross-brand HSS, Rear-curtain sync, as well as power and zoom control! Starting with the Pentax X-TTL firmware, a new wireless … Continue reading Pentax support added to Cactus V6 II TTL wireless flash trigger